title: cagA genotype and variants in Chinese Helicobacter pylori strains and relationship to gastroduodenal diseases.
mesh_terms: D000942:Antigens, Bacterial / Q000235:genetics*; D001426:Bacterial Proteins / Q000235:genetics*; D002681:China; D004269:DNA, Bacterial / Q000737:chemistry / Q000302:isolation & purification; D004587:Electrophoresis, Agar Gel; D005756:Gastritis / Q000382:microbiology*; D005838:Genotype; D016481:Helicobacter Infections / Q000150:complications / Q000382:microbiology*; D016480:Helicobacter pylori / Q000145:classification / Q000235:genetics*; D006801:Humans; D010437:Peptic Ulcer / Q000382:microbiology*; D016133:Polymerase Chain Reaction; D013274:Stomach Neoplasms / Q000382:microbiology*
chemical_list: D000942:Antigens, Bacterial; D001426:Bacterial Proteins; D004269:DNA, Bacterial; C080866:cagA protein, Helicobacter pylori